<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        /*
        选择器权重
            id:100
            class:10
            标签:1
        */
        p{
            color:red;
        }

        #i1{
            color: yellow;
        }

        .c1{
            color:blue;
        }


    </style>
</head>
<body>

<p class="c1" id="i1">aaaaaaaaaaaaa</p>


</body>
</html>